"Tim Nikias v2.0" <no_lights (@) digitaltwilight.de> wrote in 
news:3f6cfdd0$1@news.povray.org:

> [...]
> thats kinda good coding. OTOH, as soon
> as trace() is brought in, I'll expect it to
> go higher, as you'll need more than just one
> trace per ball.

Yes, you're probably right, times will probably go way up with trace().  
Simulations will be limited to night time renderings only.

> Once you do have object interaction, try
> something new: instead of using balls, use
> blobs, and try to simulate water with,
> don't know, 300 to 500 spheres. Have it
> poured out of a bucket or such.

Good idea, actually I was thinking of implementing magnetism (or gravity 
if I make the masses huge, hmmm, solar system? ;-) and though this would 
apply well to water or mercury since their particles have an attraction 
to each other.

> [...]
> Oh, and do your particles support different
> sized particles, or do they have to be the
> same size?

It does support balls with different radii ("radiuses"?), but all balls 
have the same mass right now, so collisions between a big ball and a 
little ball with the same mass looks really weird.  Need to add support 
for that.

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